Granted Patent
Utility
US 4,483,930 · App. 06/468,228
Ceramic fiber composition
Inventor:
Thomas E. Walters
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Feb 22, 1983
Inventor
Thomas E. Walters
Assignee (at issue)
Combustion Engineering, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.